I was looking at these and just wondering if it might be possible for me to carefully make a mold from my old half-mask brooch and use it to shape masks out of marzipan (not really crazy about fondant).

It might be a fun experiment, if nothing else.

A few years ago, when the local theatre hosting the tour had its box office opening, one of the corporate sponsors had a table with free cookies in the shape of the half-mask.